Renesas R5F61668RD50BGV

Overview

R5F61668RD50BGV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1668R Group, featuring a 50 MHz CPU clock, 1 MB on-chip Flash memory, and integrated peripherals including TPU, SCI, WDT, and DTC. It operates at 3.0–3.6 V supply voltage and supports industrial temperature range (−40°C to +85°C), targeting embedded control in motor drives and factory automation systems.

For engineers reviewing the R5F61668RD50BGV datasheet, R5F61668RD50BGV pinout, R5F61668RD50BGV application, or R5F61668RD50BGV equivalent, key selection criteria include its 144-pin LQFP package, 50 MHz max operating frequency, 1 MB Flash/64 KB RAM memory configuration, and support for real-time interrupt handling via INTC and programmable pulse generation via PPG.

Technical Context

The R5F61668RD50BGV implements the H8SX CPU core with three operating modes (Normal, Middle, Advanced) and supports instruction fetch from on-chip Flash or external memory via BSC. Its system architecture integrates CPG for clock domain control, WDT with windowed timeout capability, and TPU with 16-bit timer channels for PWM and input capture.

Peripheral integration includes dual SCI modules supporting asynchronous serial communication up to 10 Mbps, DTC enabling autonomous data transfers without CPU intervention, and PPG generating precise timing pulses with dead-time insertion-critical for inverter gate drive control in motor applications.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F61668MD50BGV, the R5F61668RD50BGV provides full PPG and additional TPU channels essential for complex inverter topologies; versus R5F566TEADFP, it offers proven industrial reliability and lower power consumption at 50 MHz, though without FPU or modern debug infrastructure.

Availability

R5F61668RD50BGV is available at Aetrix Electronics and suitable for industrial motor drives, factory automation PLCs, energy metering gateways, and building HVAC controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F61668RD50BGV includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.

The H8SX/1668R Group, including R5F61668RD50BGV, was designed for deterministic real-time control in industrial equipment where predictable interrupt latency, robust peripheral integration, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the R5F61668RD50BGV?

The R5F61668RD50BGV operates at a maximum CPU clock frequency of 50 MHz, achieved via internal PLL multiplication of an external crystal or clock source. This frequency is fully supported across the specified industrial temperature range (−40°C to +85°C) and 3.0–3.6 V supply voltage, enabling deterministic execution of real-time control algorithms in motor drive applications. The R5F61668RD50BGV's CPG module allows dynamic clock switching between multiple sources without system interruption.

Does the R5F61668RD50BGV support in-system programming of its Flash memory?

Yes, the R5F61668RD50BGV supports in-system programming (ISP) of its 1 MB on-chip Flash memory using standard JTAG or dedicated on-chip bootloader interfaces. Flash sectors can be erased and rewritten in 128-byte units while the CPU executes code from other memory regions, enabling field firmware updates without removing the R5F61668RD50BGV from the target board. Programming voltage is internally generated, eliminating need for external VPP.

What peripheral modules are integrated into the R5F61668RD50BGV for motor control applications?

The R5F61668RD50BGV integrates several motor-control-optimized peripherals: an 8-channel 16-bit Timer Pulse Unit (TPU) for PWM generation and input capture, a 4-channel Programmable Pulse Generator (PPG) with hardware dead-time insertion, a Data Transfer Controller (DTC) for autonomous ADC result buffering, and two Serial Communication Interfaces (SCI) for encoder feedback or host communication. These modules operate coherently under the R5F61668RD50BGV's INTC to deliver sub-microsecond timing accuracy and low-jitter waveform generation.

Is the R5F61668RD50BGV pin-compatible with other members of the H8SX/1668R Group?

Yes, the R5F61668RD50BGV shares identical pin assignment and electrical characteristics with other 144-pin LQFP variants in the H8SX/1668R Group, including R5F61664R and R5F61663R. Pin compatibility extends to power, clock, reset, I/O, and peripheral signal mappings, allowing hardware reuse across different memory configurations. However, functional differences exist - for example, R5F61668RD50BGV includes full PPG and 8-channel TPU, whereas R5F61664R omits PPG and reduces TPU to 6 channels.

What is the industrial temperature rating of the R5F61668RD50BGV?

The R5F61668RD50BGV is rated for industrial temperature operation from −40°C to +85°C, verified per Renesas Electronics' Standard quality grade qualification. This rating applies across all specified electrical parameters, including 50 MHz CPU operation, Flash read/write endurance, and peripheral timing accuracy. The R5F61668RD50BGV's thermal design supports convection-cooled PCB layouts without derating in enclosed enclosures up to 70°C ambient.